Heat and chemical treatments can straighten curly hair. which functional group is responsible for this property of hair proteins? a. phosphate group b. sulfhydryl group c. carbonyl group

Sulfhyfryl group! I swear I remember Bill Nye saying that when you perm straight, you’re breaking and rearranging sulfur bonds!

Heyhonestly, probably not. humans have always had a tendency to waste things. whether it's food, cosmetic, infrastructure, or our abandoned constructions,the landscape is littered with the refuseof man. archaeology wouldn't be a developed discipline if humans didn't leave things behind. in a way it makes us human

hope it mark me as brainlieast.